CN220828872U - Outdoor camping stove - Google Patents

Abstract

The utility model relates to an outdoor camping stove, which comprises a burner, and further comprises a gas-entraining channel which extends up and down and is used for guiding fuel gas sprayed out by the nozzle to the fire cover, wherein the nozzle is positioned below the gas-entraining channel, the fire cover is positioned above the gas-entraining channel, the gas-entraining channel sequentially comprises a gas inlet section, a pressurizing section and a pressure relief section from bottom to top along the length direction of the gas-entraining channel, the gas inlet section is provided with a gas inlet hole communicated with the outside, and part of the pressurizing section is overlapped with part of the pressure relief section along the length direction of the gas-entraining channel. Compared with the prior art, the utility model can improve the combustion efficiency of fuel gas, and can enhance the wind resistance of the burner, especially outdoor strong wind, so that the outdoor adaptability of the outdoor camping stove can be enhanced.

Description

Outdoor camping stove

Technical Field

The utility model relates to the field of stoves, in particular to an outdoor camping stove.

Background

An outdoor camping stove is an outdoor stove, which is generally used together with a gas tank by using fuel gas as fuel. The camping stove generally comprises a stove body, wherein a gas burner is arranged in the stove body, a base of the gas burner comprises a nozzle seat, a nozzle and an injection pipe, wherein the injection pipe is columnar in shape, the injection pipe is vertically arranged in the nozzle seat, the nozzle seat is stepped in shape, a lower port of the injection pipe is arranged on the step of the nozzle seat, the fire cover is covered on the nozzle seat, a mixing cavity is formed between the fire cover and the nozzle seat in a surrounding manner, the nozzle is hexagonal in shape, a nozzle is arranged at the upper end of the nozzle in a lower port of the injection pipe, and the side wall of the nozzle seat is provided with the gas inlet. The gas enters the nozzle from the gas inlet, then is injected into the injection pipe through the nozzle opening of the nozzle, and meanwhile, the gas inlet on the pipe wall of the injection pipe brings air into the injection pipe, and is mixed with the injected gas to be injected into the furnace end. Finally, the mixture is brought into the air mixing cavity by the injection pipe, and is sprayed out from a fire hole on the fire cover for combustion after being fully mixed. However, the injection effect of the existing burner is poor, so that the gas mixing is insufficient, and the combustion efficiency of the fuel gas is further affected. In addition, the wind resistance of the combustion flame is poor, and the use experience of a user outdoors is affected.

Further, a cassette oven is a common oven in which a gas tank is disposed in the oven cavity and adjacent to the oven head. For example, chinese patent No. ZL202022133427.2 (issued to the public No. CN 214791289U) discloses a card type furnace comprising a furnace body, a gas tank chamber, a gas tank, a heat dissipation mechanism, and a wind prevention mechanism, wherein the furnace body comprises a lower housing, an upper panel, a burner head disposed in the middle of the upper panel, and a furnace foot mounted around the burner head, and the gas tank chamber is disposed on one side of the furnace body and connected to the burner head through a gas pipe. The gas tank is directly arranged in the furnace chamber, and although the whole structure of the furnace is compact, in the use process, the gas tank, the furnace body, the sealing element and the like are heated for a long time due to incorrect operation (such as using a large-area baking plate or a large pot, radiating more heat to the gas tank) of a user and long-time combustion work, and the combustion heat is radiated to the furnace body and the gas tank for a long time, so that the sealing element is damaged and the gas tank is overheated, thereby burying the potential safety hazard of explosion.

Disclosure of utility model

The utility model aims to provide an outdoor camping stove with good injection effect and high combustion efficiency aiming at the prior art.

The utility model aims to provide an outdoor camping stove which can effectively prevent the explosion of a gas tank and has high use safety.

The technical scheme adopted by the utility model for solving the first technical problem is as follows: the utility model provides an outdoor camping stove, including the combustor, this combustor includes nozzle and fire lid, a serial communication port, still include and extend from top to bottom and be used for guiding the gas of nozzle blowout to the bleed passageway of fire lid, above-mentioned nozzle is located the bleed passageway below and fire lid is located the bleed passageway above, and this bleed passageway is from bottom to top in proper order along self length direction including air inlet section, pressure boost section and pressure release section, wherein, air inlet section has the communicating inlet port with the external world, and along the length direction of bleed passageway, the part of above-mentioned pressure boost section coincides with pressure release section part.

Further, the size of the cross-sectional area of the pressurizing section is reduced from bottom to top, the size of the cross-sectional area of the pressure relief section is increased from bottom to top, and the upper end of the pressurizing section extends into the lower end of the pressure relief section. The pressurizing and pressure releasing of the gas are realized through the change of the size of the cross section area, and the upper end of the pressurizing section stretches into the lower end of the pressure releasing section, so that the part of the pressurizing section is overlapped with the part of the pressure releasing section.

Further, the pressurizing section comprises a first section and a second section which are smoothly connected from bottom to top, wherein the size of the cross section area of the first section of the pressurizing section is increased from bottom to top, so that the air pressure of the mixed gas entering the first section is uniformly increased, the size of the cross section area of the second section is unchanged from bottom to top, the cross section area of the pressure relief section is increased from bottom to top, the air pressure of the mixed gas entering the pressure relief section is uniformly increased, the second section extends into the lower end of the pressure relief section, the mixed gas in the pressurizing section can be stabilized through the second section, and backflow of the mixed gas when entering the pressure relief section from the pressurizing section is avoided.

Further, the end wall of the lower end of the pressure relief section horizontally extends, the lower port of the pressure relief section is arranged in the center of the end wall and penetrates through the first section from top to bottom, and the end wall and the side wall of the lower end of the pressure relief section are connected smoothly from bottom to top along the circumferential direction. The mixed gas entering the pressure release section from the pressure boost section can be rapidly diffused and released under the guidance of the end wall, so that the rapid speed increase of the mixed gas is better realized.

Further, the fire cover is positioned above the air mixing channel and the air entraining channel is positioned below the air mixing channel. After the mixed gas enters the gas mixing channel from the gas guiding channel, the mixed gas is further diffused and decompressed, on one hand, the mixed gas can be mixed in the gas mixing channel for four times, the mixing sufficiency of air and gas is further improved, on the other hand, the speed increasing of the mixed gas can be further realized, the combustion efficiency of the combustor is further improved, and meanwhile, the wind resistance is further enhanced.

Further, the lower end of the gas mixing channel is connected with the upper end of the pressure relief section, and the cross section area of the gas mixing channel and the pressure relief section are gradually increased from bottom to top. Therefore, the mixed gas can be smoothly diffused into the gas mixing channel from the pressure release section, the gas mixing effect is improved, and the secondary acceleration of the mixed gas in the gas mixing channel is better realized.

Further, the appearance of the fire lid is discoid and level setting, and this fire lid is inside cavity and forms the air mixing chamber, and the central department of the diapire of this fire lid is opened and is connected with the upper end of above-mentioned air mixing passageway, and the central department of the roof of this fire lid is upwards uplifted and upwards extends downwards slope along circumference from top to bottom, and the cross section of this roof is circular, and the border of this roof is gone up along circumference interval arrangement with the communicating fire hole of above-mentioned air mixing chamber. The mixed gas enters the center of the mixed gas cavity from the mixed gas channel and then diffuses to the periphery, flows out from each fire hole and burns at each fire hole to form flame.

Further, the cross section size of the air inlet section is uniform from top to bottom, and the air inlet holes are arranged on the side wall of the air inlet section at intervals along the circumferential direction. Thereby enabling the outside air to be smoothly introduced into the air inlet section, and ensuring the premixing of the air and the fuel gas entering the air inlet section.

The technical scheme adopted by the utility model for further solving the second technical problem is as follows: the burner is arranged in the furnace seat, a gas pipe is arranged at the bottom of the furnace seat, one end of the gas pipe is connected with the furnace seat and is used for being in fluid communication with a gas inlet of the nozzle, a gas joint used for being connected with a gas tank is arranged at the other end of the gas pipe, the cover is disc-shaped and is used for being covered on an opening of the furnace seat in an unused state, and the burner can be used for placing objects to form a multifunctional object placing disc in the use state. Therefore, the furnace body and the gas tank are designed to be independent structures, the gas tank is arranged outside the furnace body, the gas tank and the gas tank are connected through the gas pipe, the gas tank can be effectively prevented from being overheated under the condition that smooth gas transportation is ensured, and the potential safety hazard of explosion caused by the overheating of the gas tank is avoided. In addition, the design of lid, under the unused state on the one hand, the lid closes on the opening of stove seat to can protect the inside spare part of stove seat, play dustproof, prevent effect such as collide with, and under the state of use, the lid can be used to put the thing again, convenience of customers's operation promotes user's use experience.

Further, the bottom surface of the furnace seat is provided with a supporting leg for supporting the furnace seat, and is also respectively provided with a first connecting part and a second connecting part, wherein the first connecting part is used for detachably connecting the middle part of the gas pipe along the length direction, the second connecting part is used for detachably connecting the gas joint,

And, in the unused state, the above-mentioned gas pipe winds on the corresponding stabilizer blade along the length direction of oneself, and the middle part of the gas pipe is connected with above-mentioned first connecting portion, and the gas connects and is connected with above-mentioned second connecting portion. Therefore, the gas pipe can be limited on the bottom surface of the stove seat in the unused state, and the gas pipe is prevented from falling off the stove seat or being damaged due to collision.

Compared with the prior art, the utility model has the advantages that: the burner comprises a gas-entraining channel for guiding the fuel gas sprayed out of the nozzle to the fire cover, wherein the gas-entraining channel sequentially comprises a gas inlet section, a pressurizing section and a pressure relief section from bottom to top along the length direction of the gas-entraining channel. The gas sprayed out of the nozzle firstly enters the air inlet section and is premixed with the air entering the air inlet hole, the mixed gas enters the pressurizing section from the air inlet section, the mixed gas is decelerated to increase the air pressure, the secondary mixing of the gas and the air is realized, and then the mixed gas enters the pressure release section, and as the part of the pressurizing section is overlapped with the part of the pressure release section, the mixed gas can be released instantaneously to increase the speed rapidly.

On the one hand, as the mixed gas is rapidly accelerated in the pressure release section, negative pressure can be formed at the air inlet section, so that more air is sucked into the air-entraining channel through the air inlet hole, and the sucked air is mixed with the fuel gas in the air-entraining channel, thereby being beneficial to improving the combustion efficiency of the fuel gas; on the other hand, because the mixed gas is quickly accelerated in the pressure release section, air and fuel gas can be mixed for three times in the pressure release section, and the combustion efficiency of the fuel gas is further improved through the full mixing of the fuel gas and the air. In addition, as the speed of the mixed gas is increased rapidly in the pressure release section, the wind resistance is enhanced, especially the outdoor strong wind is enhanced, and the outdoor adaptability of the outdoor camping stove can be enhanced.

Drawings

Fig. 1 is a schematic structural view of an outdoor camping stove in embodiment 1 of the present utility model;

FIG. 2 is a schematic view of the structure of FIG. 1 in another direction;

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 1;

FIG. 4 is an enlarged view of portion B of FIG. 3;

FIG. 5 is a cross-sectional view of a burner in embodiment 1 of the present utility model;

Fig. 6 is a schematic view of the outdoor camping stove in the first use state in embodiment 1 of the present utility model;

FIG. 7 is a schematic view of the structure of FIG. 6 in another direction;

fig. 8 is a schematic view of the outdoor camping stove in the second use state in embodiment 1 of the present utility model;

fig. 9 is a schematic view of the structure of an outdoor camping stove in embodiment 2 of the present utility model;

FIG. 10 is a schematic view of the structure of FIG. 9 in another direction;

Fig. 11 is a schematic view showing a partial structure of an outdoor camping stove in example 2 of the present utility model.

Detailed Description

The utility model is described in further detail below with reference to the embodiments of the drawings.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for purposes of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and because the disclosed embodiments of the present utility model may be arranged in different orientations, these directional terms are merely for illustration and should not be construed as limitations, such as "upper", "lower" are not necessarily limited to orientations opposite or coincident with the direction of gravity. Furthermore, features defining "first", "second" may include one or more such features, either explicitly or implicitly.

Example 1:

As shown in fig. 1 to 8, an outdoor camping stove includes a stove body 1 and a burner 4 (one burner 4 in this embodiment) installed in the stove body 1. The burner 4 described above comprises a nozzle 41, a fire cover 44 and a bleed air channel 40, which bleed air channel 40 extends vertically and serves to direct the fuel gas emitted by the nozzle 41 towards the fire cover 44. The nozzle 41 is located below the bleed air channel 40 and the fire cover 44 is located above the bleed air channel 40, and the bleed air channel 40 comprises an air inlet section 401, a pressurizing section 402 and a pressure release section 403 from bottom to top in sequence along the length direction of the bleed air channel 40. The air inlet section 401 has an air inlet 4011 which communicates with the outside, and along the length direction of the bleed air channel 40, a part of the pressure increasing section 402 is overlapped with a part of the pressure releasing section 403, as shown in fig. 4.

It can be seen that the burner 4 according to the utility model comprises a bleed air channel 40 for guiding the fuel gas emitted by the nozzle 41 towards the fire cover 44, the bleed air channel 40 comprising, in its own length direction, from bottom to top, an air intake section 401, a pressure increasing section 402 and a pressure releasing section 403. The gas sprayed out of the nozzle 41 firstly enters the air inlet section 401 and is premixed with the air entering the air inlet 4011, the mixed gas enters the pressurizing section 402 from the air inlet section 401, the mixed gas is decelerated to increase the air pressure, the secondary mixing of the gas and the air is realized, and then enters the pressure release section 403, and the mixed gas is instantaneously released and rapidly accelerated due to the fact that the part of the pressurizing section 402 is overlapped with the part of the pressure release section 403.

On the one hand, as the mixed gas is rapidly accelerated in the pressure release section 403, negative pressure can be formed at the air inlet section 401, so that more air is sucked into the air-entraining channel 40 through the air inlet 4011, and the sucked air is mixed with the fuel gas in the air-entraining channel 40, thereby being beneficial to improving the combustion efficiency of the fuel gas; on the other hand, the mixed gas is rapidly accelerated in the pressure release section 403, so that air and fuel gas can be mixed for three times in the pressure release section 403, and the combustion efficiency of the fuel gas is further improved by fully mixing the fuel gas and the air. In addition, as the speed of the mixed gas is increased rapidly in the pressure release section 403, the wind resistance is enhanced, especially the outdoor strong wind, so that the outdoor adaptability of the outdoor camping stove can be enhanced.

Further, the cross-sectional area of the pressure increasing section 402 is reduced from bottom to top, the cross-sectional area of the pressure releasing section 403 is increased from bottom to top, and the upper end of the pressure increasing section 402 extends into the lower end of the pressure releasing section 403. The pressurization and the pressure release of the gas are realized through the change of the size of the cross-sectional area, and the upper end of the pressurization section 402 extends into the lower end of the pressure release section 403, so that the part of the pressurization section 402 is overlapped with the part of the pressure release section 403. Preferably, the pressurizing section 402 includes a first section 4021 and a second section 4022 that are smoothly connected from bottom to top, where the cross-sectional area of the first section 4021 of the pressurizing section 402 increases from bottom to top, so that the air pressure of the mixed gas entering the first section 4021 can be uniformly increased, while the cross-sectional area of the second section 4022 is uniformly unchanged from bottom to top, the cross-sectional area of the pressure releasing section 403 increases from bottom to top, so that the air pressure of the mixed gas entering the pressure releasing section 403 can be uniformly increased, and the second section 4022 extends into the lower end of the pressure releasing section 403, so that the mixed gas in the pressurizing section 402 can be stabilized by the second section 4022, and backflow of the mixed gas when entering the pressure releasing section 403 from the pressurizing section 402 is avoided. In this embodiment, the cross section of the air inlet section 401 is uniform from top to bottom, and the air inlets 4011 are all formed on the side wall of the air inlet section 401 at intervals along the circumferential direction, so that the external air can be introduced into the air inlet section 401 smoothly, and premixing of the air and the fuel gas entering the air inlet section 401 is ensured.

Further preferably, the end wall of the lower end of the pressure relief section 403 extends horizontally, the lower port of the pressure relief section 403 is opened at the center of the end wall and the first section 4021 passes through the end wall vertically, and the end wall and the side wall of the lower end of the pressure relief section 403 are smoothly connected from bottom to top along the circumferential direction. Thus, the mixed gas entering the pressure release section 403 from the pressure boost section 402 can be rapidly diffused and released under the guidance of the end wall, and rapid acceleration of the mixed gas is better realized.

Further, in the present embodiment, the burner 4 further includes a vertically extending air mixing channel 420, the cross-sectional area of the air mixing channel 420 increases from bottom to top, and the fire cover 44 is located above the air mixing channel 420 and the air entraining channel 40 is located below the air mixing channel 420. After the mixed gas enters the mixed gas channel 420 from the air entraining channel 40, the mixed gas is further diffused and decompressed, so that on one hand, the mixed gas can be mixed in the mixed gas channel 420 for four times, the mixing sufficiency of air and gas can be better improved, on the other hand, the speed increase of the mixed gas can be further realized, the combustion efficiency of the combustor 4 can be further improved, and meanwhile, the wind resistance can be further enhanced.

Further, the lower end of the air mixing channel 420 is connected to the upper end of the pressure release section 403, and the cross-sectional area of the two increases from bottom to top. Thus, the mixed gas can be smoothly diffused into the gas mixing channel 420 from the pressure release section 403, which is beneficial to improving the gas mixing effect and better realizing the re-acceleration of the mixed gas in the gas mixing channel 420. In this embodiment, the pressure release section 403 and the air mixing channel 420 are preferably integrally formed.

Further, as shown in fig. 4, the fire cover 44 is formed in a circular shape and horizontally arranged, the interior of the fire cover 44 is hollow to form the air mixing chamber 440, the center of the bottom wall of the fire cover 44 is opened and connected with the upper end of the air mixing channel 420, the center of the top wall of the fire cover 44 is raised upward and extends obliquely from top to bottom along the circumferential direction, and the cross section of the top wall is circular. And, fire holes 441 communicating with the above-mentioned air mixing chamber 440 are arranged at intervals along the circumferential direction on the edge of the top wall. The mixed gas enters the center of the mixing chamber 440 through the mixing passage 420, and then spreads around, flows out from each fire hole 441, and burns at each fire hole 441 to form a flame. Preferably, as shown in fig. 4, the bottom wall of the fire cover 44 is inclined downward from inside to outside in the circumferential direction, and air storage grooves 442 are respectively arranged on the inner bottom surface of the fire cover 44 at intervals in the circumferential direction, each air storage groove 442 corresponds to each fire hole 441 of the innermost ring of fire holes 441 one by one, and each air storage groove 442 is opposite to the corresponding fire hole 441 up and down. In this way, part of the mixed gas stays in each gas storage groove 442 in the process of diffusing from the center to the periphery, so that the gas supply to the innermost ring of fire holes 441 can be ensured, and flameout caused by too high diffusion speed of the mixed gas can be avoided.

Further, in the present embodiment, the furnace body 1 includes a box-shaped furnace seat 11 and a cover 12, wherein the nozzle 41 is fixed on the inner bottom surface of the furnace seat 11, and a bleed sleeve 42 is vertically sleeved on the nozzle 41, as shown in fig. 4. The inner cavity of the bleed sleeve 42 is uniformly changed from bottom to top and then is necked up, so that an air inlet section 401 and a pressurizing section 402 of the bleed channel 40 are respectively formed inside the bleed sleeve 42 from bottom to top. Still further, a vertically extending gas mixing sleeve 43 is connected to the bottom opening of the fire cover 44, the cross section of the gas mixing sleeve 43 increases gradually from bottom to top, and the lower port of the gas mixing sleeve 43 is smoothly closed in the circumferential direction and the upper end of the air entraining sleeve 42 is inserted, so that the pressure release section 403 and the gas mixing channel 420 are respectively formed inside the gas mixing sleeve 43 from bottom to top. Preferably, in this embodiment, the fire cover 44 and the gas mixing sleeve 43 are integrally formed. In addition, in the present embodiment, in the unused state, the above-mentioned stove base 11 and the cover 12 form a snap connection (as shown in fig. 1) by the snap member 5 fixed on the stove base 11, so that the cover 12 can be prevented from sliding off the stove base 11. Meanwhile, a vent 114 is formed at the bottom of the oven seat 11, and the air intake 4011 of the air bleed sleeve 42 is communicated with the outside through the vent 114, as shown in fig. 2.

Further, as shown in fig. 2, a gas pipe 3 is provided at the bottom of the burner 11, one end of the gas pipe 3 is connected to the burner 11 and is used for fluid communication with the gas inlet of the nozzle 41, and the other end is provided with a gas joint 31 for connection with the gas tank 2. The cover 12 is disc-shaped and is adapted to cover the opening of the oven housing 11 in an unused state and to be used for placing objects in a used state (as shown in fig. 7). As shown in fig. 5, 6 and 7, the furnace body 1 and the gas tank 2 are designed to be independent structures, the gas tank 2 is arranged outside the furnace body 1, the gas tank 1 and the gas tank are connected through the gas pipe 3, the gas tank 2 can be effectively prevented from being overheated under the condition of ensuring smooth gas transportation, and the potential safety hazard of explosion caused by overheating of the gas tank 2 is avoided. In addition, the design of the cover 12, on the one hand, in the unused state, the cover 12 is covered on the opening of the stove seat 11, so that the parts inside the stove seat 11 can be protected, and the functions of dust prevention, collision prevention and the like (shown in fig. 1 and 3) are achieved. The gas tank 2 used in this embodiment is a mountain gas tank conforming to the GB/T38522-2020 standard.

Further, the bottom surface of the furnace base 11 is provided with legs 111 for supporting the furnace base 11, and is also provided with a first connection portion 112 and a second connection portion 113, respectively, as shown in fig. 6. Wherein, the first connecting part 112 is used for detachably connecting the middle part of the gas pipe 3 along the length direction, and the second connecting part 113 is used for detachably connecting the gas joint 31. In the unused state, the gas pipe 3 is wound around the corresponding leg 111 in the longitudinal direction thereof, and the middle portion of the gas pipe 3 is connected to the first connection portion 112, and the gas joint 31 is connected to the second connection portion 113, as shown in fig. 2. Therefore, the gas pipe 3 can be limited on the bottom surface of the stove seat 11 in an unused state, and the gas pipe 3 is prevented from falling off the stove seat 11 or being damaged due to collision. In this embodiment, the outer shape of the seat 11 is square box shape, the cover 12 is square disc shape, and the four legs 111 are uniformly distributed on the outer bottom surface of the seat 11. Specifically, in this embodiment, the first connecting portion 112 is a clip body fixed on the bottom surface of the furnace seat 11, and in the unused state, the middle portion of the gas pipe 3 is clamped in the clip body; the second connecting portion 113 is a groove concavely formed on the bottom surface of the stove base 11, and the interface of the gas connector 31 is clamped into the groove when not in use, as shown in fig. 6.

Example 2:

As shown in fig. 9 to 11, unlike in embodiment 1, in this embodiment, two burners 4 are provided in parallel in the furnace body 1. Thus, the user can use the two burners 4 to cook simultaneously, the use of the user is further facilitated, and the use experience of the user is improved.

The term "fluid communication" as used herein refers to a spatial positional relationship between two components or parts (hereinafter collectively referred to as a first part and a second part, respectively), that is, a fluid (gas, liquid, or a mixture of both) can flow along a flow path from the first part to the second part or/and be transported to the second part, and may be directly communicated between the first part and the second part, or may be indirectly communicated between the first part and the second part through at least one third party, and the third party may be a fluid channel such as a pipe, a channel, a conduit, a flow guide, a hole, a groove, or the like, or may be a chamber allowing a fluid to flow through, or a combination of the above.

Claims (10)

1. The utility model provides an outdoor camping stove, including combustor (4), this combustor (4) includes nozzle (41) and fire lid (44), a serial communication port, still include upper and lower extension and be used for leading the gas of nozzle (41) blowout to fire lid (44) bleed air passageway (40), above-mentioned nozzle (41) are located bleed air passageway (40) below and fire lid (44) are located bleed air passageway (40), and this bleed air passageway (40) are from bottom to top along self length direction include air inlet section (401), pressure boost section (402) and pressure release section (403) in proper order, wherein, air inlet section (401) have air inlet hole (4011) communicating with the external world, and along the length direction of bleed air passageway (40), above-mentioned pressure boost section (402) part coincides with pressure release section (403) part.

2. The outdoor camping stove of claim 1, wherein the cross-sectional area of the pressure boost section (402) decreases in size from bottom to top, the cross-sectional area of the pressure relief section (403) increases in size from bottom to top, and the upper end of the pressure boost section (402) extends into the lower end of the pressure relief section (403).

3. The outdoor camping stove of claim 2, wherein the pressure increasing section (402) comprises a first section (4021) and a second section (4022) which are smoothly connected from bottom to top, wherein the size of the cross-sectional area of the first section (4021) of the pressure increasing section (402) increases from bottom to top, the size of the cross-sectional area of the second section (4022) is uniform from bottom to top, the cross-sectional area of the pressure releasing section (403) increases from bottom to top, and the second section (4022) extends into the lower end of the pressure releasing section (403).

4. An outdoor camping stove as claimed in claim 3, wherein the end wall of the lower end of the pressure relief section (403) extends horizontally, the lower port of the pressure relief section (403) is arranged at the center of the end wall and the first section (4021) is penetrated up and down, and the end wall is smoothly connected with the side wall of the lower end of the pressure relief section (403) from bottom to top along the circumferential direction.

5. The outdoor camping stove of any of claims 1-4 further comprising a vertically extending air mixing channel (420), the cross-sectional area of the air mixing channel (420) increasing in size from bottom to top, and wherein the fire cover (44) is located above the air mixing channel (420) and the air entraining channel (40) is located below the air mixing channel (420).

6. The outdoor camping stove according to claim 5, wherein the lower end of the air mixing channel (420) is connected with the upper end of the pressure relief section (403), and the cross-sectional area of the two is increased from bottom to top.

7. The outdoor camping stove according to claim 5, wherein the fire cover (44) is disc-shaped and horizontally arranged, the fire cover (44) is hollow to form a gas mixing cavity (440), the center of the bottom wall of the fire cover (44) is open and connected with the upper end of the gas mixing channel (420), the center of the top wall of the fire cover (44) is raised upwards and extends obliquely from top to bottom along the circumferential direction, the cross section of the top wall is circular, and the fire holes (441) communicated with the gas mixing cavity (440) are circumferentially arranged at intervals on the edge of the top wall.

8. The outdoor camping stove according to any one of claims 1-4, wherein the cross section of the air inlet section (401) is uniform from top to bottom, and the air inlet holes (4011) are all arranged on the side wall of the air inlet section (401) at intervals along the circumferential direction.

9. An outdoor camping stove as claimed in any one of claims 1-4, further comprising a stove body (1), the stove body (1) comprising a box-like stove base (11) and a cover (12), said burner (4) being mounted in said stove base (11), the bottom of said stove base (11) being provided with a gas pipe (3), one end of said gas pipe (3) being connected to the stove base (11) and being adapted to be in fluid communication with the gas inlet of said nozzle (41), and the other end being provided with a gas fitting (31) adapted to be connected to the gas tank (2), and said cover (12) being disc-shaped and adapted to be closed over the opening of said stove base (11) in an unused condition and being adapted to be used as a multi-functional tray in a use condition.

10. An outdoor camping stove as claimed in claim 9, wherein the stove base (11) has feet (111) arranged on its bottom surface for supporting the stove base (11), and further has a first connection portion (112) and a second connection portion (113), respectively, wherein the first connection portion (112) is adapted to detachably connect a middle portion of the gas pipe (3) in a longitudinal direction, and the second connection portion (113) is adapted to detachably connect the gas joint (31),

In the unused state, the gas pipe (3) is wound around the corresponding leg (111) in the longitudinal direction thereof, the middle part of the gas pipe (3) is connected to the first connecting part (112), and the gas joint (31) is connected to the second connecting part (113).